This document specifies how to extend the ISO 32000-2 specification by adding the ISO/IEC 12113 (glTF) format as a valid format for 3D artworks contained in a RichMedia annotation. It is intended for:

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developers of software that creates PDF files (PDF writers);

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software that reads existing PDF files and usually interprets their contents for display (PDF readers);

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software that reads and displays PDF content and interacts with the computer users to modify and save the PDF file (PDF processors);

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PDF products that read and/or write PDF files for a variety of other purposes (PDF processors).

NOTE            PDF writers and PDF readers are more specialized classifications of PDF processors.

This document does not specify the following:

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specific processes for converting paper or electronic documents to the PDF file format;

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specific technical design, user interface implementation, or operational details of rendering;

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specific physical methods of storing these documents such as media and storage conditions;

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methods for validating the conformance of PDF files or PDF processors;

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required computer hardware or operating systems.